Filter.



No. 811,664. PATENTED FEB. 6, 1906. L. V. ROOD.

FILTER.

APPLICATION FILED MAY 10. 1905.

Witnesses L Attorneys Specification of Letters Patent.

Patented Feb. 6, 1906.

Application filed May 10, 1905. Serial No. 259,705.

To all whom it may concern:

Be it known that I, LLOYD V. R001), a citizen of the United States,residing at Marietta, in the county of Washington and State of Ohio,have invented a new and useful Filter, of which the following is aspecification.

This invention relates to filters, and has forits object to providecertain new and useful improvements whereby the filter is capable ofbeing connected to a source of water under pressure and is provided withnovel cleansing mechanism which is automatically actuated by the waterpassing through the filter to cleanse the filtering element, so as toprevent accumulation of sediment thereon and to draw off the dirty waterand. sediment without fouling the filtered water.

It is designed to have the filtering element and the cleansing mechanismcarried by the closure for the body of the filter to enable theconvenient removal of these parts for repairs and cleansing of theinterior of the body of the filter.

Other objects of the invention reside in the provision of novel meansfor automatically maintaining the cleaning mechanism in frictionalcontact with the filtering element and to automatically shift thecleaning members, so as to accommodate them to wear upon the filteringelement.

With these and other objects in viewthe present invention consistsin thecombination and arrangement of parts, as will be hereinafter more fullydescribed, shown in the accompanying drawings, and particularly pointedout in the appendedclaims, it being understood that changes in the form,proportion, size, and minor details may be made within the scope of theclaims without departing from the spirit or sacrificing any of theadvantages of the invention.

1 In the accompanying drawings, Figure 1 is longitudinal sectional viewof a filter embodying the features of the present invention. 1 Fig. 2 isa crosssectional view on the line 2 2 of Fig. 1. Fig. 3 is a fragmentaryview showing the controlling mechanism. for the cleansing device.

Like characters of reference designate cor responding parts in thefigures of the drawm s.

lhe body 1 of the present filter is preferably in the form of acylindrical casing of suitable dimensions in accordance with the desiredcapacity thereof, the bottom of the body or casing being provided with aradial depression 2, extending from its center outwardlyand provided atits outer end with a draw-off valve 3 for convenience in drawing oil thedirty water.

' For closing the open upper end of the case there is a top or cover 4,provided in its under side with an annular groove 5 to receive the upperedge of the body. At the center of the top or cover there is a centralelevated portion or boss 6, across which extends an invertedsubstantially U-shaped clamp memher 7, having its side members embracingthe cover and the body of the filter with the lower extremity of eachside formed into a hook 8 to take under a lug or shoulder 9 upon theexterior of the body, there being a setscrew 10 piercing the top of theclamp memberand engaging the boss or extension 6, so as to snugly clampthe cover upon the body. In addition to the boss 6 the top 4 is providedwith a substantially radial enlargement 11 upon its upper side, which ispierced by a passage 12, having its inner end in communication with avertical central passage 13, formed through the cover. At the outer endof the passage12 is a faucet or draw-off valve 14 for drawing oil thefiltered water.

Located centrally within the body is the filtering element 15, formed ofsome suitable porous material and pierced by a central longitudinal boreor passage 16, whereby the filtering element is tubular in form. For thesupport of this filtering element there is an upright rod 17 ,whichpasses through the bore of the filtering element and the passage 13 ofthe top or cover, with the upper end of the rod fitted into a threadedsocket 18 in the top of the passage 13. Upon the lower portion of therod 17 there is a plate or Washer 19, which is held against the bottomof the filtering element by means of a nut 20, threaded upon the lowerend of the rod 17, which, together with the rod 17, constitutes a hangerfor the support of the filtering element. In addition to supporting thelower end of the filtering element the plate or washer 19 closes theopen lower end of the bore or passage 16 in the filtering element, so asto prevent the dirty water from rising into the interior of thefiltering element and commingling with the filtered water therein. Theplate or washer 19 is provided with an upstanding concentric flange 21to fit snugly within the bottom of the central passage or bore 16 of thefiltering element to prevent lateral play of the latter at its bottom.For the same purpose there is a tubular member 22, having its lower endfitting snugly within the top of the bore or passage 16 of the filteringelement and its upper end threaded into the opening or passage 13 in thecover 4, there being an annular flange 23 to rest upon the top of thefiltering element and another annular flange 24 disposed a suitabledistance below the cover 4. In addition to preventing looseness of theupper end of the filtering element the tube 22 forms a continuation ofthe passage 16, so as to communicate the latter with the passage 12.

Within the space between the top of the fil-' tering element and thecover of the body or casing 1 there is a horizontally-disposedwater-wheel 25, provided with a hub 26, rotatably embracing the member22 and supported upon the flange 24 thereof. Intermediate of the hub 26and the outer edge of the wheel there is a pendent annular flange 27,from which blades or paddles 28 extend outwardly and disposednon-radially, as best shown in Fig. 2, so as to most effectively receivethe impact of the incoming water through the inlet 30, formed throughthe side of the body or casing 1 of the filter. A substantiallyhorizontal ring or plate 31 extends between the lower edge of the flange27 and the outer edges of the paddles, so as to cooperate with thelatter to form closed buckets for the reception of the water, wherebythe wheel is driven steadily by the incoming water. It is preferred tohave the inner end portion of the inlet 30 laterally enlarged, as at 32,so as to give a clearance to the incoming stream of water and preventspreading thereof, whereby the water is compelled to strike the paddlesin a compact stream, which produces a more effective rotation of thewheel. At op posite sides of the inlet 30 the body or casing 1 isprovided with an internal enlargement or flange 33, fitting closely tothe outer peripheral edge of the wheel and slightly underlapping thesame, as indicated by the dotted line in Fig. 2 of the drawings, therebyto prevent the incoming water from escaping downwardly without actuatingthe wheel, said flange of course extending only a comparatively shortdistance around the body in order that there may be an annular spacebetween the remaining portion of the wheel and the body to permit of thewater escaping downwardly into the body of the filter.

It is proposed to maintain the exterior of the filtering element in acleansed condition by means of one or more scraping elements, preferablyin the nature of brushes 34, each brush being controlled by acentrifugal device to maintain the same in frictional engagement withthe filtering element, said centrifugal device being shown in detail inFig. 3. A pair of substantially parallel rods 35 and 36 depend from theunder side of the water-wheel at opposite sides of the filteringelement, the lower ends of these rods depending below the filteringelement and connected by a cross-bar 37, there being an opening 38 inthe middle of the cross-bar for the reception of the lower end of therod 17. The brush 7o 34 is carried by an arcuate crank-arm 39, which isprovided with a sleeve 40, rotatably embracing the rod 35, there being alongitudinal slot 41 formed in the crank-arm 39. Upon the other arm 36there is a rotatable sleeve 42, carrying a crank-arm 43, extending awayfrom the crank-arm 39 and provided at its free end with a counterweight44, there being an arcuate link 45 rigidly carried by the sleeve 42 andsituated between the filter- 8o ing element and the rod 35, with itsfree end provided with a pin or projection working in the slot 41 of thearm 39. When the filter is in operation, the tendency of the weightedarm 43 is to swing outwardly upon its pivotal support 36, wherefore thelink 45, acting upon the crank-arm 39, tends to draw the brush 34 intocontact with the filtering element, whereby this controlling deviceautomatically compensates for wear upon the fil- 9o tering element andthe brush. By connect-- ing the link 45 with the arm 39 at a pointremote from its pivotal support 35 a comparatively short movement of thearm 43 will impart a much longer movement to the arm 39, 5 thereby toinsure a positive engagement of the cleaning device with the filteringelement. The brush 34 is pivotally supported upon the arm 39 on asubstantially horizontal axis 46, whereby the brush is capable oftilting vertically, so as to automatically accommodate itself to anyuneven wearing of the outer surface of the filtering element.

In using the present device water is admitted through the inlet 30,whereupon the water-wheel is rotated by theincoming water and thebrushes or cleaning elements 34 are rotated around the stationaryfiltering element 15. After the water escapes from the wheel and passesdownwardly into the body 1 it percolates through the filtering elementinto the bore or passage 16, through which it rises to the passage 12 inthe top of the cover 4 and may be drawn off through the cook or faucet14. The dirty water may be drawn off through the cook or faucet 3without fouling the filtered water within the filtering element. Duringthe rotation of the cleaning mechanism around the filtering element thebrushes will be maintained in frictional engagement with the filteringelement under the centrifugal action of the counterbalanced crank armsor levers 43.

A very important feature of the present invention resides in the factthat the filtering element and the cleansing mechanism may be assembledupon the cover and then applied with the latter to the body or casing ofthe filter, which materially facilitates the setting up of the device,and these parts are of course removable with the cover whenever it isdesired to make repairs or to cleanse the interior of the body, therebymaterially simplifying the setting up and taking apart of the device andenabling the maintaining of the device in a sanitary and operablecondition.

There is' an important advantage in taking the dirty water from thecenter of the lower portion of the filter by the passage 2, as itaffords a clearance for the swirling water, and therefore the latterdoes not choke the rotating cleaning device, as might occur if the dirtywater was carried off from a point at one side of the receptacle.

Having fully described the invention, what is claimed is 1. A filtercomprising a body having an inlet near its top, a cover having adraw-off passage communicating with a central passage piercing thebottom of the cover, a tubular filtering element hung from the cover, atube hung from the cover and communieating between the bore of thefiltering element and the central passage of the cover, a water-wheelmounted upon the tube in cooperative relation with the inlet, andcleansing means carried by the water-wheel and working in cooperationwith the filtering element.

2. In a filter, the combination of a body, a cover having a draw-offpassage centrally piercing the bottom of the cover, a tubular filteringelement within the bed a hanger de )ending from the cover through thedrawoil passage and the bore of the filtering element and connected tothe latter, a tube depending from the cover with its lower end fittingthe bore of the filtering element and its upper end in communicationwith the drawoff passage, the tube being provided with an externalannular flange, a water-wheel having a hub rotatably embracing the tubeand supported upon the flange thereof, and cleansing means carried bythe water-wheel in cooperative relation with the filtering element.

3. A filter of the class described comprising a filtering element and acleansing device mounted to rotate concentrically with respect to thefiltering element and including a support working around the filteringelement, a cleaning member having a crank-arm pivotally mounted upon thesupport, a centrifugal member pivoted upon the support inclependently ofthe arm, and a link carried by the centrifugal member and connected tothe arm.

4. A filter of the class described compris ing a filtering element and acleansing device mounted to rotate concentrically with respect to thefiltering element and including a support, a cleaning element having acrankarm pivoted upon the support, a centrifugal member pivotallymounted upon the support independently of the arm, and a link rigidlycarried by the centrifugal member and having a slidable connection withthe arm.

5. In a filter, the combination of a casing, a filtering elementtherein, a water-wheel for actuation by the incoming water, a pair ofsubstantially parallel rods hung from the wheel, sleeves rotatablymounted upon the rods, a crank-arm carried by one of the sleeves, acleaning element carried by the crank-arm, a centrifugal member carriedby the other sleeve, and a link rigidly carried by said other sleeve andconnected to the arm.

6. A filter of the class described comprising a filtering element and acleansing device mounted. to rotate concentrically with respect to thefiltering element and including a support working around the filteringelement, a cleaning member mounted to swing upon the support, acentrifugal member mounted to swing upon the support independently ofthe cleaning member, and means connecting the centrifugal member and thecleaning member.

7. In a filter of the class described, the combination of a casing, afiltering element therein, a water-wheel for actuation by the incomingwater, a pair of substantially par allel rods hung from the wheel,sleeves rotatably mounted upon the rods, a crank-arm carried by one ofthe sleeves, a cleaning element pivotally supported intermediate of itsends upon the crank-arm in frictional engagement with the filteringelement, a centrifugal member carried by the other sleeve, and a linkrigidly carried by said other sleeve and connected to the arm.

In testimony that I claim the foregoing as my own I have hereto afiiXedmy signatm'e in the presence of two witnesses.

LLOYD V. ROOD.

Witnesses:

DAVID H. THOMAS, S. A. PALMER.

